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How Medicare Advantage Rebates Disadvantage Medicare’s Stand-Alone Drug Plan Market

Rebates that reduce Part D premiums for Medicare Advantage plans with drug coverage make it harder for stand-alone prescription drug plans (PDPs) to compete. That may contribute to instability in the PDP market relied on by people in traditional Medicare. The number of Part D stand-alone Rx drug plan options for the avg Medicare beneficiary has fallen by half in recent years, while Medicare Advantage drug plan options have risen.

Also: Medicare Part D Enrollment, Premiums, and Cost Sharing in 2026

Analyzing Changes in Medicare Part D Enrollment for 2026

Stand-Alone Drug Plans Cover a Larger Share of Part D Enrollees Living in the Most Rural Areas Than Medicare Advantage Plans

A Current Snapshot of the Medicare Part D Prescription Drug Benefit

Changes to Medicare Part D in 2024 and 2025 Under the Inflation Reduction Act and How Enrollees Will Benefit

NEW AND NOTEWORTHY

What to Know About Medicare Coverage of Telehealth

Congress has repeatedly extended pandemic-era flexibilities around Medicare coverage of telehealth, but most such flexibilities remain temporary. This brief answers key questions about the current scope of Medicare telehealth coverage, including both temporary and permanent changes adopted through legislation and regulation, and future policy considerations.

Examining the Potential Impact of Medicare’s New WISeR Model

A federal initiative to establish new prior authorization requirements in traditional Medicare, called the Wasteful and Inappropriate Service Reduction (WISeR) model, is likely to have only modest impact in its first year.

State Profiles for Dual-Eligible Individuals

This data collection draws on Medicare and Medicaid administrative data to present national and state-level information on people who are covered by both Medicare and Medicaid, referred to as dual-eligible individuals (also known as dually-enrolled beneficiaries).

Medicare Advantage

Medicare Advantage in 2026: Enrollment Update and Key Trends

More than half (55%) of eligible Medicare beneficiaries are enrolled in Medicare Advantage in 2026, continuing a decades-long shift toward private plans. Special Needs Plans have driven recent growth, with nearly 1 in 4 enrollees now in such plans.
To better understand trends in the growth of the Medicare Advantage program, this brief provides current information about enrollment, including by plan type and firm.

See Also: Medicare Advantage in 2026: Premiums, Out-of-Pocket Limits, Supplemental Benefits, and Prior Authorization

How Medicare Pays Medicare Advantage Plans: Issues and Policy Options

Medicare Advantage Enrollees Have Access to About Half of the Physicians Available to Traditional Medicare Beneficiaries

Medicare Advantage Insurers Made Nearly 53 Million Prior Authorization Determinations in 2024

Medicare Advantage Out-of-Pocket Limits: Variation & Trends

Prescription Drugs

What to Know About the BALANCE Model for GLP-1s in Medicare and Medicaid and the Medicare GLP-1 Bridge

CMS's temporary program to cover GLP-1 drugs for obesity in Medicare, called the BALANCE model, will not launch as scheduled on January 1, 2027. Instead, CMS is extending the Medicare GLP-1 Bridge, a separate short-term program that was to run from July to December 2026. It will now run through the end of 2027.

Key Facts About Medicare Drug Price Negotiation

Recent Trends in GLP-1 Use and Spending in Medicare

What to Know About Pharmacy Benefit Managers (PBMs) and Federal Efforts at Regulation

The IRA Has Improved Coverage of Drugs Selected for Medicare Price Negotiation

Data Visualization

The Facts About Medicare Spending

This interactive provides the facts on Medicare spending. Medicare, which serves 67 million people and accounts for 12 percent of the federal budget and 21 percent of national health spending, is often the focus of discussions about health expenditures, health care affordability and the sustainability of federal health programs. u003cbru003eu003cbru003eExplore data on enrollment growth, Medicare spending trends overall and per person, growth in Medicare spending relative to private insurance, spending on benefits and Medicare Advantage, Part A trust fund solvency challenges, and growth in out-of-pocket spending by beneficiaries.u003cbru003eu003cbru003eu003ca href=u0022https://www.kff.org/medicare/issue-brief/faqs-on-medicare-financing-and-trust-fund-solvency/u0022 data-type=u0022linku0022 data-id=u0022https://www.kff.org/medicare/issue-brief/faqs-on-medicare-financing-and-trust-fund-solvency/u0022u003eRelated:u003ca href=u0022https://www.kff.org/medicare/issue-brief/faqs-on-medicare-financing-and-trust-fund-solvency/u0022u003e FAQs on Medicare Financing and Trust Fund Solvencyu003c/au003eu003c/au003e

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  • How are Seniors Choosing and Changing Health Insurance Plans?

    Report

    This report summarizes first-hand accounts of seniors’ Medicare private plan decision making strategies, based on focus groups conducted in four cities. Seniors found the initial plan selection process overwhelming due to the volume of information they received and their inability to organize it. Few used the government's online comparison tool, and those that did cite several shortcomings. Many relied on advice from sources they trust, including insurance agents, plan representatives, friends, family members, doctor's offices…

  • Medicare Advantage: Take Another Look

    Perspective

    This Policy Insight explores possible explanations for the continued rise in Medicare Advantage enrollment between 2010 and 2013 in spite of a projected decrease following payment changes in the Affordable Care Act (ACA).

  • Medicare Advantage: Take Another Look 

    News Release

    In the latest post in the Policy Insights series, Tricia Neuman and Gretchen Jacobson examine the surprising growth in Medicare Advantage enrollment following payment reductions included in the Affordable Care Act. Previous columns in the Policy Insights series are also available on kff.org.

  • Paying a Visit to the Doctor: Current Financial Protections for Medicare Patients When Receiving Physician Services

    News Release

    As the Congress continues to work on reforming Medicare payments for physician services, a new Kaiser Family Foundation brief examines key provisions in current law that help provide safeguards and financial protections for beneficiaries when they visit their doctor, and explains how potential changes could affect beneficiaries, providers, and the Medicare program. These provisions include: The participating provider program encourages physicians and other practitioners to charge no more than Medicare fees for services provided to…

  • Report, Briefing Examine How Seniors Choose Among Their Medicare Plan Options

    News Release

    Report & Briefing Examine How Seniors Choose Among Their Medicare Plan Options Seniors appreciate having a wide range of Medicare private plan choices available to them but often feel unqualified to choose among them, a new Kaiser Family Foundation report concludes. Based on discussions with seniors in four cities around the country, the report captures seniors' experiences and frustrations in making decisions about their Medicare plans. Seniors cite many factors as influencing their initial choice…

  • The Policy Implications of Medicare’s New Measure of Financial Health

    Issue Brief

    This report examines a new measure of Medicare’s financial health established by the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (MMA). The report, authored by Marilyn Moon, takes an in-depth look at the program’s new solvency test, which measures general revenues as a share of total Medicare spending and can trigger a “funding warning” that compels the President to propose and the Congress to consider a funding warning.

  • Modifying Medicare’s Benefit Design: What’s the Impact on Beneficiaries and Spending?

    Report

    This report examines an approach to reforming Medicare that has been a focus of Congressional hearings and featured in several broader debt reduction and entitlement reform proposals, and was included in the June 2016 House Republican health plan. The analysis models four different options for modifying Medicare's benefit design, all of which include a single deductible, modified cost-sharing requirements, a new cost-sharing limit, and a prohibition on first-dollar Medigap coverage. The analysis models the expected…

  • Modifying Traditional Medicare’s Benefit Design Could Reduce Federal Spending But With Cost Tradeoffs Between Beneficiaries and The Federal Government

    News Release

    Revamping traditional Medicare’s benefit design and restricting “first-dollar” supplemental coverage could reduce federal spending, simplify cost sharing, protect against high medical costs, decrease out-of-pocket spending for many beneficiaries, and provide more help to those with low incomes -- but would be unlikely to achieve all of these goals simultaneously.